Patents by Inventor Guo Hua Liang

Guo Hua Liang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250134243
    Abstract: A cleaning attachment and rotary tool for cleaning are provided. A cleaning attachment includes a housing, a plurality of bristles, and a drive shaft extending from the housing in an axial direction, the drive shaft being coupled to the housing such that rotation of the drive shaft causes rotation of the housing. The housing includes a reservoir, a valve for dispensing the fluid from the reservoir, and at least one resilient element surrounding an axis defined by the drive shaft. Translation of the drive shaft along the axial direction causes compression of the resilient element, and compression of the resilient element causes the valve to open to dispense fluid from the reservoir. A rotary tool for cleaning includes the cleaning attachment and a rotary tool having a motor, power source, and a chuck configured to receive the drive shaft of the cleaning attachment.
    Type: Application
    Filed: October 27, 2023
    Publication date: May 1, 2025
    Inventors: Jeremy Fedrigon, J. Luke Jenkins, Stephen A. Hughett, Ryan Li Hao Yang, Aiden Li Zhang, Leo You Rui Li, Hank Yong Hang Huang, Guo Hua Liang
  • Patent number: 8443523
    Abstract: A door lock locator configured to attach to a door having a latch edge and to locate the door lock in relation to a strike plate. The door lock locator includes an edge wall having an edge hole locator, a first wall extending from the edge wall and including a bore hole locator, a second wall extending from the edge wall and cooperating with the first wall to attach the door lock locator to the door. The door lock locator also includes a strike plate locator coupled to one of the edge wall, the first wall, and the second wall. The strike plate locator has a protrusion that selectively engages the strike plate to locate the edge hole locator and the bore hole locator.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: May 21, 2013
    Assignee: Techtronic Power Tools Technology Limited
    Inventors: Chin Hung Lam, Tsz Kin Wong, Guo Hua Liang, Yu Xia, James E. Pangerc
  • Publication number: 20120017452
    Abstract: A door lock locator configured to attach to a door having a latch edge and to locate the door lock in relation to a strike plate. The door lock locator includes an edge wall having an edge hole locator, a first wall extending from the edge wall and including a bore hole locator, a second wall extending from the edge wall and cooperating with the first wall to attach the door lock locator to the door. The door lock locator also includes a strike plate locator coupled to one of the edge wall, the first wall, and the second wall. The strike plate locator has a protrusion that selectively engages the strike plate to locate the edge hole locator and the bore hole locator.
    Type: Application
    Filed: September 27, 2011
    Publication date: January 26, 2012
    Inventors: Chin Hung Lam, Tsz Kin Wong, Guo Hua Liang, Yu Xia, James E. Pangerc